scholarly journals BRUSHY1/TONSOKU/MGOUN3 is required for heat stress memory

2018 ◽  
Vol 42 (3) ◽  
pp. 771-781 ◽  
Author(s):  
Krzysztof Brzezinka ◽  
Simone Altmann ◽  
Isabel Bäurle
Keyword(s):  
Heat Stress ◽  
Stress Memory

scholarly journals CSN5A Subunit of COP9 Signalosome Is Required for Resetting Transcriptional Stress Memory after Recurrent Heat Stress in Arabidopsis

Biomolecules ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 668
Author(s):  
Amit Kumar Singh ◽  
Shanmuhapreya Dhanapal ◽  
Alin Finkelshtein ◽  
Daniel A. Chamovitz
Keyword(s):  
Transcription Factors ◽  
Heat Stress ◽  
Histone Methylation ◽  
Environmental Stresses ◽  
Cop9 Signalosome ◽  
Stress Memory ◽  
Transcriptional Stress ◽  
Transcriptional Memory

In nature, plants are exposed to several environmental stresses that can be continuous or recurring. Continuous stress can be lethal, but stress after priming can increase the tolerance of a plant to better prepare for future stresses. Reports have suggested that transcription factors are involved in stress memory after recurrent stress; however, less is known about the factors that regulate the resetting of stress memory. Here, we uncovered a role for Constitutive Photomorphogenesis 5A (CSN5A) in the regulation of stress memory for resetting transcriptional memory genes (APX2 and HSP22) and H3K4me3 following recurrent heat stress. Furthermore, CSN5A is also required for the deposition of H3K4me3 following recurrent heat stress. Thus, CSN5A plays an important role in the regulation of histone methylation and transcriptional stress memory after recurrent heat stress.

scholarly journals Concurrent Drought and Temperature Stress in Rice—A Possible Result of the Predicted Climate Change: Effects on Yield Attributes, Eating Characteristics, and Health Promoting Compounds

2019 ◽  
Vol 16 (6) ◽  
pp. 1043 ◽  
Author(s):  
Alphonsine Mukamuhirwa ◽  
Helena Persson Hovmalm ◽  
Hans Bolinsson ◽  
Rodomiro Ortiz ◽  
Obedi Nyamangyoku ◽  
...  
Keyword(s):  
Climate Change ◽  
Heat Stress ◽  
Temperature Stress ◽  
Quality Characteristics ◽  
Total Protein Content ◽  
Rice Cultivars ◽  
Yield Attributes ◽  
Stress Memory ◽  
Drought And Heat Stress ◽  
The Impact

Despite the likely increasing co-occurrence of drought and heat stress, not least in equatorial regions, due to climate change, little is known about the combinational effect of these stresses on rice productivity and quality. This study evaluated the impact of simultaneous drought and temperature stress on growth, grain yield, and quality characteristics of seven rice cultivars from Rwanda, grown in climate chambers. Two temperature ranges—23/26 °C night/day and 27/30 °C night/day—together with single or repeated drought treatments, were applied during various plant developmental stages. Plant development and yield were highly influenced by drought, while genotype impacted the quality characteristics. The combination of a high temperature with drought at the seedling and tillering stages resulted in zero panicles for all evaluated cultivars. The cultivar ‘Intsindagirabigega’ was most tolerant to drought, while ‘Zong geng’ was the most sensitive. A “stress memory” was recorded for ‘Mpembuke’ and ‘Ndamirabahinzi’, and these cultivars also had a high content of bioactive compounds, while ’Jyambere’ showed a high total protein content. Thus, climate change may severely impact rice production. The exploitation of genetic diversity to breed novel rice cultivars that combine drought and heat stress tolerance with high nutritional values is a must to maintain food security.

scholarly journals Heat‐stress Memory is Responsible for Acquired Thermotolerance in Bangia fuscopurpurea

2019 ◽  
Vol 55 (5) ◽  
pp. 971-975 ◽  
Author(s):  
Ikuya Kishimoto ◽  
Inori Ariga ◽  
Yutaka Itabashi ◽  
Koji Mikami
Keyword(s):  
Heat Stress ◽  
Stress Memory ◽  
Acquired Thermotolerance ◽  
Bangia Fuscopurpurea

scholarly journals Heat-Stress Responses Differ among Species from Different ‘Bangia’ Clades of Bangiales (Rhodophyta)

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1733
Author(s):  
Ho Viet Khoa ◽  
Puja Kumari ◽  
Hiroko Uchida ◽  
Akio Murakami ◽  
Satoshi Shimada ◽  
...  
Keyword(s):  
Heat Stress ◽  
Stress Response ◽  
Stress Responses ◽  
Red Alga ◽  
Heat Sensitivity ◽  
Heat Stress Response ◽  
Stress Memory ◽  
Response Strategies ◽  
Heat Stress Tolerance ◽  
Bangia Atropurpurea

The red alga ‘Bangia’ sp. ESS1, a ‘Bangia’ 2 clade member, responds to heat stress via accelerated asexual reproduction and acquires thermotolerance based on heat-stress memory. However, whether these strategies are specific to ‘Bangia’ 2, especially ‘Bangia’ sp. ESS1, or whether they are employed by all ‘Bangia’ species is currently unknown. Here, we examined the heat-stress responses of ‘Bangia’ sp. ESS2, a newly identified ‘Bangia’ clade 3 member, and Bangia atropurpurea. Intrinsic thermotolerance differed among species: Whereas ‘Bangia’ sp. ESS1 survived at 30 °C for 7 days, ‘Bangia’ sp. ESS2 and B. atropurpurea did not, with B. atropurpurea showing the highest heat sensitivity. Under sublethal heat stress, the release of asexual spores was highly repressed in ‘Bangia’ sp. ESS2 and completely repressed in B. atropurpurea, whereas it was enhanced in ‘Bangia’ sp. ESS1. ‘Bangia’ sp. ESS2 failed to acquire heat-stress tolerance under sublethal heat-stress conditions, whereas the acquisition of heat tolerance by priming with sublethal high temperatures was observed in both B. atropurpurea and ‘Bangia’ sp. ESS1. Finally, unlike ‘Bangia’ sp. ESS1, neither ‘Bangia’ sp. ESS2 nor B. atropurpurea acquired heat-stress memory. These findings provide insights into the diverse heat-stress response strategies among species from different clades of ‘Bangia’.

scholarly journals Root endophyte induced plant thermotolerance by constitutive chromatin modification at heat stress memory gene loci

EMBO Reports ◽  
2021 ◽  
Author(s):  
Kirti Shekhawat ◽  
Maged M Saad ◽  
Arsheed Sheikh ◽  
Kiruthiga Mariappan ◽  
Henda Al‐Mahmoudi ◽  
...  
Keyword(s):  
Heat Stress ◽  
Chromatin Modification ◽  
Root Endophyte ◽  
Stress Memory

scholarly journals Arabidopsis FORGETTER1 mediates stress-induced chromatin memory through nucleosome remodeling

eLife ◽  
2016 ◽  
Vol 5 ◽  
Author(s):  
Krzysztof Brzezinka ◽  
Simone Altmann ◽  
Hjördis Czesnick ◽  
Philippe Nicolas ◽  
Michal Gorka ◽  
...  
Keyword(s):  
Gene Expression ◽  
Heat Stress ◽  
Nucleosome Occupancy ◽  
Promoter Regions ◽  
Nucleosome Remodeling ◽  
Chromatin Remodelers ◽  
Stress Memory ◽  
Active Memory ◽  
Nucleosome Dynamics ◽  
Sessile Organisms

Plants as sessile organisms can adapt to environmental stress to mitigate its adverse effects. As part of such adaptation they maintain an active memory of heat stress for several days that promotes a more efficient response to recurring stress. We show that this heat stress memory requires the activity of the FORGETTER1 (FGT1) locus, with fgt1 mutants displaying reduced maintenance of heat-induced gene expression. FGT1 encodes the Arabidopsis thaliana orthologue of Strawberry notch (Sno), and the protein globally associates with the promoter regions of actively expressed genes in a heat-dependent fashion. FGT1 interacts with chromatin remodelers of the SWI/SNF and ISWI families, which also display reduced heat stress memory. Genomic targets of the BRM remodeler overlap significantly with FGT1 targets. Accordingly, nucleosome dynamics at loci with altered maintenance of heat-induced expression are affected in fgt1. Together, our results suggest that by modulating nucleosome occupancy, FGT1 mediates stress-induced chromatin memory.

Respiratory burst oxidase homologue‐dependent H2O2 is essential during heat stress memory in heat sensitive tomato

2019 ◽  
Vol 258 ◽  
pp. 108777 ◽  
Author(s):  
Mintao Sun ◽  
Fangling Jiang ◽  
Rong Zhou ◽  
Junqin Wen ◽  
Shouyao Cui ◽  
...  
Keyword(s):  
Heat Stress ◽  
Respiratory Burst ◽  
Stress Memory ◽  
Respiratory Burst Oxidase ◽  
Respiratory Burst Oxidase Homologue

The epigenetic chromatin-based regulation of somatic heat stress memory in plants

Plant Gene ◽  
2021 ◽  
pp. 100318
Author(s):  
Saqlain Haider ◽  
Javed Iqbal ◽  
Muzaffar Shaukat ◽  
Sana Naseer ◽  
Tariq Mahmood
Keyword(s):  
Heat Stress ◽  
Stress Memory

scholarly journals Enterobacter sp. SA187 mediates plant thermotolerance by chromatin modification of heat stress genes

2020 ◽  
Author(s):  
Kirti Shekhawat ◽  
Arsheed Sheikh ◽  
Kiruthiga Mariappan ◽  
Rewaa Jalal ◽  
Heribert Hirt
Keyword(s):  
Global Warming ◽  
Transcription Factors ◽  
Heat Stress ◽  
Crop Production ◽  
Chromatin Modification ◽  
Extreme Temperature ◽  
Endophytic Bacterium ◽  
Beneficial Microbes ◽  
Stress Memory ◽  
Stress Genes

AbstractGlobal warming has become a critical challenge to food safety, causing severe yield losses of major crops worldwide. Heat acclimation empowers plants to survive under extreme temperature conditions but the potential of beneficial microbes to make plants thermotolerant has not been considered so far. Here, we report that the endophytic bacterium Enterobacter sp. SA187 induces heat tolerance in Arabidopsis thaliana by reprogramming the plant transcriptome to a similar extent as acclimation. Acclimation induces priming of heat stress memory genes such as APX2 and HSP18.2 via the transcription factors HSFA1A, B, D, and E and the downstream master regulator HSFA2. hsfa1a,b,d,e and hsfa2 mutants compromised both acclimation and bacterial priming through the same pathway of HSF transcription factors. However, while acclimation transiently modifies H3K4me3 levels at heat stress memory gene loci, SA187 induces the constitutive priming of these loci. In summary, we demonstrate the molecular mechanism by which SA187 imparts thermotolerance in A. thaliana, suggesting that beneficial microbes might be a promising way to enhance crop production under global warming conditions.

scholarly journals Primary carbohydrate metabolism genes participate in heat stress memory at the shoot apical meristem of Arabidopsis thaliana

2020 ◽  
Author(s):  
Justyna Jadwiga Olas ◽  
Federico Apelt ◽  
Maria Grazia Annunziata ◽  
Sarah Isabel Richard ◽  
Saurabh Gupta ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Heat Stress ◽  
Carbohydrate Metabolism ◽  
Higher Plants ◽  
Fructose Bisphosphate ◽  
Protection Mechanism ◽  
Stress Memory ◽  
Heat Shock Transcription Factors ◽  
Fructose Bisphosphate Aldolase ◽  
Carbohydrate Metabolism Genes

AbstractAlthough we have a good understanding of the development of shoot apical meristems (SAM) in higher plants, and the function of the stem cells (SCs) embedded in the SAM, there is surprisingly little known of its molecular responses to abiotic stresses. Here, we show that the SAM of Arabidopsis thaliana senses heat stress (HS) and retains an autonomous molecular memory of a previous non-lethal HS, allowing the SAM to regain growth after exposure to an otherwise lethal HS several days later. Using RNA-seq, we identified genes participating in establishing a SAM-specific HS memory. The genes include HEAT SHOCK TRANSCRIPTION FACTORs (HSFs), of which HSFA2 is essential, but not sufficient, for full HS memory in the SAM, the SC regulators CLAVATA1 (CLV1) and CLV3, and several primary carbohydrate metabolism genes, including FRUCTOSE-BISPHOSPHATE ALDOLASE 6 (FBA6). We found that expression of FBA6 during HS at the SAM complements that of FBA8 in the same organ. Furthermore, we show that sugar availability at the SAM is essential for survival at high-temperature HS. Collectively, plants have evolved a sophisticated protection mechanism to maintain SCs and, hence, their capacity to re-initiate shoot growth after stress release.

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